Different native and polyfill #481
Description
use
- img in shadowroot
- transform to change img position
different
When the button is clicked, the native performance will output shadowImg2, and the polyfill will display abnormally.
code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>native</h1>
<template id="userCardTemplate">
<style>
.scroll1 {
height: 200px;
width: 400px;
position: relative;
overflow: hidden;
}
</style>
<div class="scroll1">
<img id="shadowImg1" src="../png.png" style="transform: translate(0%, 0%) translateZ(0)" alt="" srcset="">
<img id="shadowImg2" src="../png.png" style="transform: translate(0%, 0%) translateZ(0)" alt="" srcset="">
</div>
<button id="translate">translate</button>
</template>
<user-card></user-card>
</body>
<script>
const intersectionObserver = new IntersectionObserver(function(entries) {
for (let i = 0; i < entries.length; i += 1) {
if (entries[i].intersectionRatio !== 0) {
console.log(entries[i].target.id);
}
}
});
class UserCard extends HTMLElement {
constructor() {
super();
const shadow = this.attachShadow( { mode: 'closed' } );
const templateElem = document.getElementById('userCardTemplate');
this.content = templateElem.content.cloneNode(true);
const imgs = this.content.querySelectorAll('img');
for(let i = 0; i < imgs.length; i += 1) {
intersectionObserver.observe(imgs[i]);
};
const img = this.content.querySelector('#shadowImg');
this.count = 1;
this.content.querySelector('#translate').addEventListener('click', () => {
imgs[this.count - 1].style['transform'] = `translate(0%, ${-100}%) translateZ(0)`;
imgs[this.count].style['transform'] = `translate(0%, ${-100}%) translateZ(0)`;
});
shadow.appendChild(this.content);
}
}
window.customElements.define('user-card', UserCard);
</script>
</html>